Ratchet-wrench.



J. DOLAN.

RATGHET WRENCH.

APPLICATION FILED 0014. 191a.

Patented Feb. 17, 1914 JOHN DULAN, Oll DUQUESNE, PElllNSYLVANl'i-l.

BATCHET-WRENCI-L earners.

To all who/a it may concern Be it known that l, JOHN Down, a citi- Zenof the United States, residing at Duqucsn e, in the county of Alleghenyand t itate of Pennsylvania, have invented a new and useful Improvementin ltatchetl vrenches, of which the following is a specification.

This invention relates to a ratchet wrench, especially to one in whichall of the movable parts tighten and move as one ratchet piece duringthe pulling action of the handle, thereby acting as chain-tongs, theparts loosening as the handle is reversed or for the purpose of taking anew grip.

The invention consists of the novel features of construction hereafterdescribed, pointed out in the claims, and shown in the accompanyingdrawings, in which,

Figure 1 is a. side elevation. Fig. 2 is a side view partly in sectionand with a side plate removed. Fig. 3 is a view at rightangles to Fig.1, and partly in section. Fig. 4; is a detail view of a segmentalspacing block. Fig. 5 is a side elevation of a modified form ofconstruction.

In these drawings, 1 represents a suitable socket adapted to receive apipe or other handle 1. The handle socket 1 is provided at its solid endportion with a compound curved end face and a curved extension, which.extension is provided with a number of teeth 2, said teeth beingpreferably four in number. A ratchet wheel 3 is pro vided with teethadapted. to cooperate with the teeth 2 of the handle socket and is alsoprovided with a central polygonal opening adapted to receive a wrench, atool-holder or any suitable tool to which rotation is to be given. Theside plates at are journaled upon hub portions 5 of the ratchet wheel,said hub being provided with suitable openings 5 to which any suitableform of locking or fastening device, not shown, may be inserted for thepurpose of locking the wrench or other tool against longitudinalmovement through the ratchet wheel. The plates 4 project beyond theperiphery of the ratchet wheel and are also extended so as to overlapthe handle socket 1 to which they are connected by means oi a suitablepin or rivet 6, said pin passing loosely through the handle socket andserving as a pivot upon which said socket can rock as well as means forsecuring the plates to the handle socket. The plates are spaced apartand also connected to each other by a segmental block Specification ofLetters Patent.

Application filed October 4. 1913.

Patented t7, iltlilal. eel-m1 in. 793,351.

7 which partially incloses the ratchet wheel and is provided withsuitable rivet openings, the side plates 4 and the block '7 beingsecured together by rivets or other suitable fastening means 4;. inorder to permit a slight loosening oi the parts upon reverse movement orthe handle and the tightening up of the parts upon the pulling movementof the handle, I have the rivets l rather loose, so that there is not anabsolutely rigid connection between the plates and the block "I, and theplates also fit loosely upon the hubs The block 7 is slightly enlargedat one end and in said enlarged end is arranged a spring socket 8 inwhich is inserted. a spring 9 which bears upon a heel portion 9 formedupon the end of the handle socket 1 and upon the side opposite that ofthe teeth 2, and also adjacent to the rivets 6.

In operation upon a. pulling or working movement of the handle 1 theteeth 2 grip the ratchet wheel, and the plates a are drawn tight to thehub and. all of the parts turn as one rigid piece. Upon reverse movementof the handle 1 the handle socket will rock upon the pin 6 so that theteeth 9 will clear the ratchet wheel, this rocking movement beinglimitedand checked by the heel 9 before engaging the spacing block T. Upon thisrear movement the parts will loosen up, tightening again somewhat as achain would upon the next pulling movement.

In 5 I have illustrated a modified form of construction in which twohandle sockets are employed; two spacing blocks and in which the platesare shaped for connection with each handle socket, the sockets beingindicated at A, the plates at B and the spacing segments at C.

lVhat l claim is 1. A. ratchet wrench comprising a handle portion havinga curved extension provided with teeth and a hollow portion, platessecured upon opposite sides of said handle portion, a ratchet wheelclosed between said plates and adapted to be engaged by the teeth of thehandle portion, said ratchet wheel having hub portions upon which saidplates are mounted and about which said plates rotate, and a segmentalblock spacing said plates a it secured thereto, said block partiallyinclosing the ratchet wheel and acting as a check to reverse themovement of said handle portion.

A ratchet wrench comprising a ratchet wheel having hub portions, platesloosely mounted upon said hub portions, a handle socket extendingbetween said plates having a toothed curved portion adapted to engagethe ratchet Wheel, a pin passing through said plates and said handlesocket, said handle socket being adapted to turn upon said pin as apivotal point, a curved block spacing said plates apart and securedthereto and a spring carried by one end of JOHN DOLAN.

Witnesses ARTHUR B. PITTS, JAMES R. HALL.

Copies of this patent may be obtained for five cents each,

by addressing the Commissioner of Patents,

Washington, D. C.

